Chuck, the 1033 does have a boost winding for the whistle. Two step lever. First step sends the DC offset down the track to trigger the whistle relay, second step engages the booster winding.
FWIW a 1033 was my only transformer up to about 5 years ago when I upgraded to a LW and now a Z4000. Ran my Vision 700E with it and a few other Legacy plus PS2 and PS3 engines. No problems using it along with my TMCC Lock On fast breaker and TVS.
I upgraded when I got my Vision Niagara and found it didn’t have enough reserve current for the tender water overflow effect. Other that it should work just fine for a small layout.
Pete